Improvement in spark-arresters



MlCHAEL O'CONNOR.

Improvement in -Spark-Arresters. No. 114,846. Patented May16,1871.

\m an OR w aura sale t at aim nionnnn oooNNon, or BANGOR, MICHIGAN.

Letters Patent No. 114,846, dated May 16, 1 871."

IMPROVEMENT m SPARK-RRRESTERS.

"The Schedule referred to in these Letters Patent and making part of the To whom it may concern:

Be it known that I, MICHAEL OOomron, of Bangor, in the county of Bay and State of Michigan, have invented a new and useful Improvement in Spark- Arrester and Extinguisher; and I do declare that the following is a true, and accurate description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon and being a part of this specification, in which- Figure 1 is a perspective-view of my invention;

Figure '2, a plan of my brake. Like letters refer to like parts in eachfigure. The nature of this invention relates to the constructionand operation of an ingenious device for arrestingand extinguishing sparksin smokestacks, where steam-engines are employed in mills and other factp 'The device may be employed in eithenbrick or me 'tallic smoke-stacks; Whven employed in. the former 'the device should be inclosed in a metallic jacket, so

that no damage shall bedone to th'e-brick-work by the steam escaping from the openings.

In the accompanying drawing' g Arepresents a frame-work, which carries the work- ;ing parts "of the apparatus. B is apipe secured inthe lower part of the frame A, and from the center of its length rises the pipe 0, which alsoforms the shaft of the fan. Thislatternamedpipeis stepped into the pipe B in such a man-' nor that there is a free communication between the two, and so that the pi pe;..(l will rotate freely, its upper end being so secured'totheupper part of the frame as to allow of such rotation.

Connecting-pipes are secured to the T-pipes D,

which are fastened in the usual manner to the pipe B.

To the openings E there may be attachedother pipes, niit'shown, for the admission of. air; and to the openings E there should be attached other pipes, also not shown, one of which should connect with the steamdome of the boiler, while the other connects with the exhaust-pipe of the engine.

F are wings, secured vertically upon the rotating pipeO. These wings are of the form shown in the drawing, with their upper ends curved forward and overhanging in such a manner that the upward draught through the smoke-stack will cause the'fan to rotate.

Communicating with the interior of the vertical pipe 0, and projecting through the same, are the small curved pipes G, between the wings, for the purpose of allowing the steam or air to passfrom the pipe 0 outwardly. i v

The lower end-of the pipe 0 is so arranged at its bottom that it will allow a thin sheet of steam to pass around it from the pipe B.

"H is a ,spark-arrester, of the usual wire mesh, rigidly fixed above the fan within the smoke-stack, and

it may or may not be secured to the frame.

I is a double brake, the construction of which is fully shown in the drawing; and the oflice of which is to'stop therotation of the vertical pipe 0, when desired. This device beingplaced in the smoke-stack at any convenient point, the fan is caused to rotate bythe draught through the stack.

Exhaust or live steam being admitted through the proper pipes is discharged through the small pipes G and around the foot of the vertical pipe, whence, by

the rotary motion of the wings it is brought directly into contact with the sparks and cxtingnishes them. When steam is not "to be had I have found by experience that air admitted through proper pipes will partially extinguish the sparks in a device of this kind.

What I claim as my invention, and desire to secure by'Letters Patent, is-- 4 l. The fan, composed of the rotating vertical pipe 0, and wings F, arranged-within a smoke-stack, with the pipe B, substantially as and for the purposes set forth.

' 2. The pipes in}, in combination with the pipe .0 and wings F, when operating as and for the purposes set forth.

3. The arrangement of the brake I, in combination with the vertical pipe 0, in a device constructed as above described, substantially as and for the purposes set forth.

4. The combination .of the frame A, pipes B O, wings F, short pipes G, spark-arrester H, and brake I, when constructed and arranged to operate as described with a smoke-stack, 'as set forth.

MICHAEL OOONNOR.-

Witnesses 'Inos. -S. SPRAG E, H. F. EBERTS. 

